1.1 本规程涵盖了为分析放射性核素成分（尤其是铀和钚）而采集的表土样品的制备。本规程描述了一种可接受的制备土壤样品用于放射化学分析的方法。 1.2 以国际单位制表示的数值应视为标准值。括号中给出的值仅供参考。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 具体危险说明见 7.3 . 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 根据本规程为放射性核素分析准备的土壤样品可用于表征放射性核素成分。本规程旨在制备均匀样品，从中可以提取较小的小份进行放射性核素表征。 5.2 许多放射性核素成分的土壤表征计划利用土壤的γ射线光谱测量来量化许多可能的γ发射分析物。这些测量中广泛使用的做法是填充校准的样品容器，如Marinelli烧杯( ∼ 600 mL体积），用均匀的土壤样本进行计数，例如使用指南可以做什么 C1402 . 通过准备整个土芯收集，可以获得足够的均匀样品，用于此类伽马射线光谱测定和其他放射化学测量。

1.1 This practice covers the preparation of surface soil samples collected for analysis of radionuclide constituents, particularly uranium and plutonium. This practice describes one acceptable approach to the preparation of soil samples for radiochemical analysis. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. A specific hazard statement is given in 7.3 . 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Soil samples prepared for radionuclide analyses by this practice can be used to characterize radionuclide constituents. This practice is intended to produce a homogeneous sample from which smaller aliquots may be drawn for radionuclide characterization. 5.2 Many soil characterization plans for radionuclide constituents utilize gamma-ray spectrometry measurements of soil to quantify a number of possible gamma emitting analytes. A widely used practice for these measurements is to fill a calibrated sample container, such as a Marinelli beaker ( ∼ 600-mL volume), with a homogenized soil sample for counting such as what may be done using Guide C1402 . By preparing the entire soil core collection, sufficient homogeneous sample is available for such gamma-ray spectrometry and other radiochemical measurements.